* {
  margin: 0;
  padding: 0;
}

body {
  margin: 0;
  font-family: "Microsoft YaHei", sans-serif;
  background: #fff;
}

header {
  width: 100%;
  height: 96px;
}

header .header-box {
  display: flex;
  align-items: center;
  padding: 0 20px;
  box-sizing: border-box;
  width: 980px;
  height: 96px;
  margin: auto;
}

header .logo {
  display: flex;
  align-items: center;
}

main {
  display: flex;
  justify-content: center;
  align-items: center;
  height: 449px;
  width: 100%;
  background-image: url("https://static.zongheng.com/v2017/images/pass/bg.jpg");
  background-size: auto 100%;
  background-repeat: repeat;
  background-position: center bottom;
}

.left-img {
  width: 460px;
  height: 350px;
  margin-right: 60px;
}

.left-img img {
  width: 460px;
  height: 350px;
}

.form-container {
  width: 402px;
  height: 393px;
  border: 1px solid #ddd;
  padding: 30px 20px;
  box-sizing: border-box;
  box-shadow: 0 0 5px rgba(0, 0, 0, 0.1);
  background-color: #fff;
}

.form-container .form-item {
  position: relative;
  width: 352px;
  height: 40px;
  border: 1px solid #d9d9d9;
}

.form-container .form-item .img-box1 {
  position: absolute;
  left: 15px;
  top: 11px;
  width: 14px;
  height: 18px;
  background-image: url("https://static.zongheng.com/v2017/images/pass/icon-login.png");
  background-position: 0 -1px;
  background-repeat: no-repeat;
  z-index: 3;
}

.form-container .form-item .img-box2 {
  position: absolute;
  left: 15px;
  top: 11px;
  width: 14px;
  height: 18px;
  background-image: url("https://static.zongheng.com/v2017/images/pass/icon-login.png");
  background-position: 0 -51px;
  background-repeat: no-repeat;
  z-index: 3;
}

.form-container .username {
  width: 352px;
  height: 40px;
  box-sizing: border-box;
  outline: none;
  border: none;
  padding: 0 10px 0 40px;
}

.form-container .password {
  width: 352px;
  height: 40px;
  box-sizing: border-box;
  outline: none;
  border: none;
  padding: 0 10px 0 40px;
}

.form-container .tab1 {
  display: none;
}

.form-container .tab2 {
  display: block;
}

.form-container .tab2 .form-item2 {
  position: relative;
  width: 222px;
  height: 40px;
  background-color: #f5f5f5;
  border: 1px solid #d9d9d9;
}

.form-container .tab2 .form-item2 .img-box3 {
  position: absolute;
  top: 10px;
  left: 15px;
  width: 14px;
  height: 18px;
  background-image: url("https://static.zongheng.com/v2017/images/pass/icon-login.png");
  background-repeat: no-repeat;
  background-position: 0 -25px;
}

.form-container .tab2 .tab2psw {
  outline: none;
  border: none;
  width: 222px;
  height: 40px;
  padding: 0 10px 0 40px;
  box-sizing: border-box;
  background-color: #f5f5f5;
}

.form-container .tab2 .getyzm {
  position: absolute;
  right: -130px;
  top: 0;
  width: 108px;
  height: 40px;
  line-height: 40px;
  background-color: #a5232e;
  color: #fff;
  font-size: 12px;
  border-radius: 3px;
  text-align: center;
  cursor: pointer;
}

.tab-switch {
  display: flex;
  border-bottom: 1px solid #ccc;
  margin-bottom: 20px;
}

.tab-switch div {
  flex: 1;
  text-align: center;
  padding: 10px 0;
  cursor: pointer;
  font-weight: bold;
  color: #666;
}

.tab-switch .active {
  position: relative;
  color: #a12621;
}

.active:after {
  position: absolute;
  bottom: -1px;
  left: 0;
  content: '';
  display: block;
  width: 180px;
  height: 2px;
  background-color: #a12621;
}
